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N. FETE-RS. PNOT0-UTHDGHPHE1 WASHINGYON. D. c.

waited tant ALBER'I` R. FIELD, OF CENTRAL FALLS, RHODE ISLAND.

Letters Patent No. 101,989, dated A11/ril 19, 1870.

debo-M IMPROVEMENT IN LOOM The Schedule referred to in these LettersPatent and making part of the same.

To all whom it may concern:

l this specification.

This invention relates to new and important improvements in looms forweaving fancy goods; and

It consists, mainly, in the mechanism-for raising and lowering theharness of the loom, but embraces, in combination with suoli mechanism,other and improved mechanical appliances for producing the necessarymotion for properly operating the harness, changing their positions, andthereby changing the figure or face of the goods woven. l

In the accompanying sheet of drawings- Figure 1, Sheet I, representsavertical section of fig. 4 on the line x x.

Figure 2 is a detailed view of the ratchet and paw] for revolving thecard Figure 3 is a detailed view of the cam, by means of which ltheproper motion is imparted for operating my improvement. This cam isplaced on the crankshaft of the loom, the shaft and parts of theloomframe being shown in dotted lines on this sheet.

Figure 4, Sheet II, is a section of tig. 1 through the line y y.

' Figure 5, Sheet II, is a back view of the card, giving also an edgeview of the ratchet and pawl by which itis revolved. v

Similar letters of reference indicate corresponding parts. Y

This improvement is an attachment to looms employed for weaving fancygoods, the main object being to operate upon the harness used forvarying the figure of suchgoods. g

With this view, my improved apparatus is placed on top of the loom, sothat each harness may be operated upon separately, and raised andloweredby the same mechanism alternately, or in any desired manner.

A represents a suitable frame-work, by which the operating parts of myimprovement are supported.

A portion of this frame is horizontal, as seeniu fig.- 1, which portionsupports the lever B, (seen partly in dotted lines,) which leverreceives its motion from the cam C, and, by its vibration on its fulcrumI), imparts the requisite motion to raise and lower the harness andrevolve the card.

E is the crank-shaft of the loom.

Friction rolls engage with each side of a ange around the rirn of thecam,A by means of which a positive reciprocating motion is imparted tothe lever.

A portion of the cam O is the arc of a circle whose center is the centerof the loom-shaft E, which circle gives the harness the necessary periodof rest.

As seen in iig. 1, the main portion of the frame consists of a doubleupright frame, from which the horizontalportion is extended.

F represents` a broad open space in each sidev of the frame.

G represents transverse rails on each side of the open spaces F.

H ,is a vibrating bar, which is pivoted to one of the lower rails G, asseen at I.

The end of the vibrating lever B is connected with this bar H by meansof the block J, which hangs on pivots in lugs K, projecting from thebar.

L is an upright piece which is pivoted to the other end of the bar, and

M is a horizontal lifting-rail, rigidly attached thereto, as seen at N.

O is an uprightpiece, which is attached to the other end of thelifting-bar M, and, consequently, rises and falls with it.'

This upright piece O is jointed at its lower end to another vibratingbar I), which is pivoted to a transverse rail, G, on the other sideofthe open space F, on which pivot Q it is vibrated.

R is a horizontal frame, which is connected with the vibrating bar I atone end, and to the vibrating bar Erst named, (H,) as seen at S.

This frame R is also connected with the lifting-rail and upright piece Lby means of the vibrating bar I',

which is pivoted to the rail ofthe main frame, as seen at U.

It will-thns be seen that all the parts which we have described asvibrating or moving vertically are connected together and movesimultaneously, by virtue of the motion imparted by the cam and lever B.

V represents a series of lifting bars, which pass through orifices in aplate, W, on top of the frame 1t, the edge of the plate being seen inlig. 4. Each of these bars V is shouldered, and the shoulders rest onthe plate IV when the bars are down. Below the shoulder or shouldersthey work freely in the orifices through the plate. v

Each of these hanging bars is connected with a harness of the loom, bywhich the harness is raised and lowered, as we will now proceed todescribe.

To each of the bars V is attached a lifting-rod fr, the ends of whichextend up, and are turned at right angles, so as to hook onto the top ofthe lifting-rail M, when in proper position. One of them, with the barV, is seen in iig. l thus lifted. When this lifting operation isperformed, the bars V are raised by the risc of the frame R, whichcarries the plate W, and, at the same time, (by meansof the vibratingbars and connections already described,) the lifting-rail M descends andreceives the hook on the end ofthe liftingrod.

Then a rod is thus hooked onto the rail the motion of the frame R (withthe bala-nce of the bars) is reversed, and also that of thelifting-rail, which now ascends, carrying up the rod, and, consequentlythe harness, while the lifting-bars, with the -harness connectedtherewith, descend to their lowest position.

To throw the lifting-rods x forward, so that they will catch o nto thelifting-rail, is the duty of the card s, at the back of the machine,seenin iig. 5. This card7 is simply an endless apron, formed of crossslatsy, linked or jointed together, and revolved on a drum, y', by means of aratchet and pawl arrangement, seen detached in fig. 2.

The ratchet is marked a', and is fast on the shaft of the drum.

G is the pawl, which is attached to a bell-crank, el', which rocks onthe end of the card drum-shaft.

The bell-crank d' is connected with the upright piece L of thelifting-rail, and receives motion therefrom to work the pawl and ratchetand revolve the card.

The motion imparted in this manner is, of course, an intermittentmotion, but the periods of movement are regulated with especial,reference to the movement of the harness. It will be seen that eachofthe strips 'y of the card is' perforated for holding a projecting pin,e, which pin may be changed to any part of the slat.

\ j", (iig. 1,) represents horizontal rods, which are allowed alongitudinal sliding movement in the upper portion of the frame. Thesehorizontal rods correspond in number with the lifting-rods x, and eachone has an orifice 0r eye, through which the lifting-rods pass, by meansof' which the position of the liftingrods are governed.

g represents vertical iiat springs, attached at their bottom ends to across-rail of the frame, as seen at h', corresponding in number with thelifting-rods, and also passing up through eyes in the horizontal slidingrods f. The holes in the slats of thev card are placed so as tocorrespond with the position of these vertical springs g', so that a pinplaced in any one of them will strike and force before it a spring. Thisaction gives the horizontal rod a forward movement which carries forwardone of the lifting-rods w, so that it hooks onto the lifting-rail M.This forward movement of the lifting-rod takes place after theliftingrail has descended to receive it. v

The back motion of the horizontal sliding rods j" is produced by aspiral spring, i', on each.

It will be seen that' by changing the pins in the card-slats, themovement of the harness ofthe loom may be varied in any desired manner,and the figure or face of the woven fabric Varied accordingly. Whileoneharness is operated upon by the lifting-rail, the rest of them movewithv a uniform motion, but the lifting-rods vary in length, diminishinggradually from tirst to last, as seen in the drawings. This constructionis for the purpose of graduating the lift of the shed according to thedistance from the clothmaking point, as usual.

It will be' seen that .the yharness is not only raised, but lowered bythe machine, springs, levers, or any suitable arrangement being providedbeneath for drawing the harness down and keeping it in proper position.

Having thus described my invention,

I claim as new and desire to secure by Letters Patentl 1. The vibratingbars P H I', uprights O L, and rigid transverse bars M R, all attachedto the frame, and arranged and operated as set forth.

2. The combination of bar H, rails G, block J, pivotcd upright L,horizontal lifting-rail M, vertically-reciprocating upright O, andvibrating bar P, frame R, and vibrating bar I', when said parts arerelatively arranged to bc operated by a vibrating lever', B, as setforth.

ALBERT R. FIELD.

' Witnesses:

WILLIAM Knmmx, HENRY E. WHIPPLE.

